Tìm chênh lệch Timestamp – Python Pandas

Để tìm chênh lệch timestamp, dùng toán tử index (ngoặc vuông). Cần dùng abs() cho timestamp.

Nhập thư viện:

import pandas as pd

Tạo DataFrame 3 cột, 2 cột ngày có timestamp:

dataFrame = pd.DataFrame({
    "Car": ["Audi", "Lexus", "Tesla", "Mercedes", "BMW"],
    "Date_of_Purchase": [
        pd.Timestamp("2021-06-10"),
        pd.Timestamp("2021-07-11"),
        pd.Timestamp("2021-06-25"),
        pd.Timestamp("2021-06-29"),
        pd.Timestamp("2021-03-20"),
    ],
    "Date_of_Service": [
        pd.Timestamp("2021-11-10"),
        pd.Timestamp("2021-12-11"),
        pd.Timestamp("2021-11-25"),
        pd.Timestamp("2021-11-29"),
        pd.Timestamp("2021-08-20"),
    ]
})

Tìm chênh lệch timestamp giữa 2 cột ngày:

timestamp_diff = abs(dataFrame['Date_of_Purchase'] - dataFrame['Date_of_Service'])

Ví dụ

import pandas as pd

dataFrame = pd.DataFrame({
    "Car": ["Audi", "Lexus", "Tesla", "Mercedes", "BMW"],
    "Date_of_Purchase": [
        pd.Timestamp("2021-06-10"),
        pd.Timestamp("2021-07-11"),
        pd.Timestamp("2021-06-25"),
        pd.Timestamp("2021-06-29"),
        pd.Timestamp("2021-03-20"),
    ],
    "Date_of_Service": [
        pd.Timestamp("2021-11-10"),
        pd.Timestamp("2021-12-11"),
        pd.Timestamp("2021-11-25"),
        pd.Timestamp("2021-11-29"),
        pd.Timestamp("2021-08-20"),
    ]
})
print("DataFrame...\n", dataFrame)

timestamp_diff = abs(dataFrame['Date_of_Purchase'] - dataFrame['Date_of_Service'])
print("\nDifference between two Timestamps:\n", timestamp_diff)

Đầu ra

DataFrame...
     Car Date_of_Purchase Date_of_Service
0   Audi       2021-06-10      2021-11-10
1  Lexus       2021-07-11      2021-12-11
2  Tesla       2021-06-25      2021-11-25
3  Mercedes       2021-06-29      2021-11-29
4    BMW       2021-03-20      2021-08-20

Difference between two Timestamps:
0   153 days
1   153 days
2   153 days
3   153 days
4   153 days
dtype: timedelta64[ns]